#172A45#172A45

#172A45 is a dark, muted blue. Relative luminance 0.023; OKLCH L 28.4% C 0.056 H 257.3°. Best body text is #FFFFFF at 14.45:1 contrast (WCAG AA passes).

Color values

HEX	#172A45
RGB	rgb(23, 42, 69)
HSL	hsl(215, 50%, 18%)
HSV	hsv(215, 67%, 27%)
CMYK	cmyk(66.7%, 39.1%, 0%, 72.9%)
CIE-LAB	lab(16.83, 2.15, -19.28)
CIE-LCH	lch(16.83, 19.40, 276.37°)
OKLab	oklab(28.35% -0.0123 -0.0545)
OKLCH	oklch(28.35% 0.056 257.3)
XYZ	xyz(2.2551, 2.2676, 5.9479)
Luminance	0.0227 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A45 #453217

analogous

#174145 #172A45 #1B1745

triadic

#172A45 #45172A #2A4517

tetradic

#172A45 #451741 #453217 #17451B

square

#172A45 #451741 #453217 #17451B

split-complementary

#172A45 #451B17 #414517

monochromatic

#080E17 #080E17 #172A45 #264673 #3662A1

Accessibility & contrast

On white

14.45

#172A45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#172A45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A45

14.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A45	#FFFFFF	#000000	##FFFFFF
##172A45	1.00	14.45	1.45	14.45
#FFFFFF	14.45	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F2C46

Deuteranopia (green-blind)

#192844

Tritanopia (blue-blind)

#003034

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #172a45;
/* rgb */ color: rgb(23, 42, 69);
/* oklch */ color: oklch(28.4% 0.056 257.3);

Tailwind

colors: {
  custom: {
    50: '#596379',
    500: '#172a45',
    950: '#000000',
  },
}

SCSS

$custom: #172a45;
$custom-light: #596379;
$custom-dark: #000000;

JSON

{
  "hex": "#172a45",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 69
  },
  "hsl": {
    "h": 215.217,
    "s": 50,
    "l": 18.039
  },
  "oklch": {
    "l": 0.28354,
    "c": 0.05591,
    "h": 257.3
  },
  "luminance": 0.02268
}

Semantic roles & 50–950 ramp

primary

#172A45

secondary

#7C613C

accent

#A04EDA

background

#F5F5F7

surface

#E9EAED

border

#C5C6C8

text

#040509

muted

#79797B

Preview Lab

Preview with #172A45

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →